Apparatus for a rotating thyristor excitation

Abstract

An arrangement for the rotating thyristor excitation [RT excitation] in a turbogenerator which is suited for very high centrifugal force loadings in which the carrier discs of the rectifiers wheels are designed in the form of hubs mounted about the shaft secure against turning and having hollow-cylindrical projections extending axially in two directions to form with the shaft recesses into which the semiconductors including their cooling elements and their protective external components as well as the electronic driver units are disposed along the inside diameter of the cylindrical projection on the hubs.

What is claimed is: 
     
       1. An arrangement for a rotating thyristor excitation in a turbogenerator including a machine housing and having at least one rectifier wheel including a rotating carrier disc on which the semi-conductor components including elements and protective external components and associated electronic driver units for the semi-conductor components are disposed, the turbogenerator including at least a three-phase main exciter machine, wherein the improvment comprises a carrier disc of the rectifier wheel in the form of a hub securely mounted over the shaft, said hub having hollow-cylindrical projections extending axially on both sides to form with the shaft an annular recess, with the semi-conductor components including their cooling elements and protective external components disposed on the inside of one projection and the associated driver units on the inside of the other projection and insulated against the carrier disc and a contactless and brushless signal transmission device having a stationary part mounted in the machine housing of the turbogenerator and having a rotating part mounted to the outside diameter of said carrier disc. 
     
     
       2. Apparatus according to claim 1 wherein a positive wheel is provided for the positive potential of the exciter current and a negative wheel for the negative potential of the exciter current. 
     
     
       3. Apparatus according to claim 1 wherein said device is an inductive signal transmission device comprised of inner and outer coaxial, mutually spaced flat coils with the inner flat coil disposed on the outside diameter of the carrier disc and the outer flat coil in the machine housing coaxial with the inner coil. 
     
     
       4. Apparatus according to claim 3 and further including a coil carrier mounted to the outside diameter of said carrier disc, said coil carrier having on its inside diameter grooves for the accommodation of said flat coils. 
     
     
       5. Apparatus according to claim 1 and further including a signal transmission device for the transmission of monitoring signals from the rotating part to the stationary part of the turbogenerator.